Joint module quick heat dissipation structure

Abstract

The utility model relates to a joint module quick heat radiation structure belongs to joint module heat radiation technical field, a joint module quick heat radiation structure, including the shell, shell is equipped with mounting panel and heat dissipation fin, inside is equipped with connecting seat and fan blade, connecting seat has the air inlet with dustproof net, and the air outlet is opened between mounting panel and connecting seat, the motor shaft is worn in the mounting panel center, the bearing seat is worn on the shaft, the fan blade is fixed in the motor shaft output end, the shell peripheral wall opens the heat dissipation hole, and the heat dissipation hole and the air outlet are distributed in the wrong direction. The structure is through the active air cooling and the passive heat dissipation cooperation, improves the heat exchange efficiency, adapts multiple installation scene, dustproof and stable structure, can effectively reduce the module temperature, prolongs the life, and is applicable to industrial robot and other automation equipment.

Description

Technical Field

[0001] This utility model belongs to the field of joint module heat dissipation technology, specifically relating to a rapid heat dissipation structure for joint modules. Background Technology

[0002] As a core transmission component of industrial robots and automated equipment, the joint module continuously generates heat during high-speed operation due to the internal components such as motor shafts and bearings. If this heat cannot be dissipated in time, the internal temperature of the module will rise, affecting not only transmission accuracy (e.g., gap changes caused by thermal expansion and contraction of metal parts), but also accelerating bearing wear, insulation aging, shortening the module's lifespan, and even causing malfunctions such as motor overload shutdown. However, current traditional joint module heat dissipation structures have many design flaws, making it difficult to meet the demands of high-precision, high-load applications.

[0003] Traditional joint module cooling often employs either passive cooling (such as relying solely on natural heat dissipation from the casing) or simple active cooling (such as adding small axial fan blades). Passive cooling relies on metal conduction and natural air convection, resulting in slow heat dissipation. When the module operates under high load, heat can easily accumulate, causing a sudden temperature rise (often exceeding 60°C), which in turn affects transmission accuracy and component lifespan. Simple active cooling often uses external fan blades, which are far from the heat-generating components inside the module. The airflow cannot accurately cover the heat source, and the exhaust air is prone to short-circuiting with the intake air, resulting in low heat exchange efficiency and limited cooling effect. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed fast heat dissipation structure for joint modules in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A rapid heat dissipation structure for a joint module includes a housing, a mounting plate on the housing, a connecting seat inside the housing, an air inlet on the connecting seat, an air outlet between the mounting plate and the connecting seat, a motor shaft rotatably passing through the center of the mounting plate, a bearing housing on the motor shaft, and a fan blade fixedly mounted on the output end of the motor shaft inside the housing, with heat dissipation holes on the fan blade wall.

[0007] As a further optimization of this utility model, the mounting plate and the outer shell are an integral structure, and at least four air outlets are evenly distributed along the circumference of the mounting plate.

[0008] As a further optimization of this utility model, the air inlet is opened on the side wall of the connecting seat and communicates with the internal space of the outer shell, and a dustproof net is provided at the air inlet.

[0009] As a further optimization of this utility model, the bearing housing and the connecting seat are connected by an interference fit, and at least two bearings are provided in the bearing housing to support the motor shaft.

[0010] As a further optimization of this utility model, the fan blade is a centrifugal fan blade, and the air outlet direction of the fan blade is towards the air outlet.

[0011] As a further optimization of this utility model, the heat dissipation holes are opened on the peripheral wall of the outer shell and are distributed in a staggered manner with the air outlet to form a convection heat dissipation channel.

[0012] As a further optimization of this utility model, the outer wall of the shell is also provided with heat dissipation fins, which are integrally formed with the shell and are evenly distributed along the circumference of the shell.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, the motor shaft synchronously drives the centrifugal fan blades, and the fan blades are precisely oriented towards the air outlet. The cold air flows directly through the air inlet to the core heat source such as the motor shaft and bearing housing, absorbs heat, and is quickly discharged, forming "directional active air cooling". It can directly remove heat from the vicinity of the heat source. In addition, the fan blades are fixedly sleeved on the output end of the motor shaft, eliminating the need for additional drive components. It directly utilizes the module's own power without increasing the size or energy consumption, and is suitable for miniaturized joint modules. The air inlet is opened on the side wall of the connector, and the heat dissipation holes are evenly distributed along the periphery of the outer shell. Both of these form a staggered convection channel with the air outlet. Regardless of whether the module is installed horizontally, vertically, or at an angle, the airflow can circulate stably and is not affected by the installation angle.

[0015] 2. In this utility model, the integrated heat dissipation fins on the outer wall of the shell increase the passive heat dissipation area, and together with the staggered heat dissipation holes, enhance air convection, forming a dual effect of "active air cooling + passive fin heat dissipation". Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is the utility model Figure 1 A partial structural diagram of the first side section;

[0018] Figure 3 This is the utility model Figure 1 A partial structural diagram of the second side section;

[0019] Figure 4 This is a utility model Figure 1 A schematic diagram of the front section structure.

[0020] In the diagram: 1. Outer casing; 2. Mounting plate; 201. Air outlet; 3. Connecting base; 301. Air inlet; 4. Motor shaft; 5. Bearing housing; 6. Fan blades; 7. Heat dissipation holes. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1: As Figure 1 - Figure 4 As shown, a rapid heat dissipation structure for a joint module includes a shell 1 as the main support for the heat dissipation structure. It is made of ADC12 aluminum alloy and is integrally die-cast, which combines lightweight and high thermal conductivity, providing protection and heat dissipation for internal components. One side wall of the shell 1 and the mounting plate 2 adopt an integral structural design. The mounting plate 2 is a circular metal plate that is seamlessly connected to the shell 1, which not only enhances the structural stability but also allows for rapid heat dissipation through metal conduction. The outer wall of the shell 1 is also integrally formed with heat dissipation fins, which are evenly distributed around the circumference of the shell 1. By increasing the contact area with the air, passive heat dissipation is achieved, which helps to reduce the overall temperature of the shell 1.

[0023] like Figure 1 - Figure 4 As shown, a connecting seat 3 is fixedly installed in the center of the interior of the outer casing 1. The connecting seat 3 is a circular metal structure with air inlets 301 evenly distributed along its sidewall. The air inlets 301 are completely connected to the interior space of the outer casing 1, forming a channel for external air to enter. To prevent dust and impurities from entering the interior of the outer casing 1 and contaminating the components with the airflow, a dustproof net is fixedly installed at each air inlet 301 by a buckle. The dustproof net can be disassembled and cleaned regularly to ensure smooth airflow without affecting heat dissipation efficiency.

[0024] like Figure 1 - Figure 4 As shown, one side of the connecting seat 3 is positioned opposite to the mounting plate 2, with a gap of 15-20mm reserved between them. This gap forms an air outlet 201. At least four air outlets 201 are evenly distributed around the circumference of the mounting plate 2. Each air outlet 201 has an arc-shaped groove structure, which facilitates the rapid discharge of internal hot air and forms an airflow circulation path of "inlet-outlet" with the air inlet 301.

[0025] like Figure 1 - Figure 4As shown, a through hole is provided at the center of the mounting plate 2. The motor shaft 4 passes through the hole via a bearing. The motor shaft 4 is the power output shaft of the joint module. One end of the motor shaft 4 extends to the outside of the housing 1 to connect to the load, while the other end is located inside the housing 1 to provide power for the heat dissipation structure. A bearing seat 5 is fitted on the outer wall of the motor shaft 4. The bearing seat 5 and the connecting seat 3 are tightly connected by an interference fit to ensure that the bearing seat 5 is fixed and stable. At least two bearings are arranged axially inside the bearing seat 5. The inner ring of the bearing is interference-fitted with the motor shaft 4, and the outer ring is fixed to the inner wall of the bearing seat 5. Through the double bearing support structure, the coaxiality and stability of the motor shaft 4 when rotating at high speed are ensured, and the additional heat generated by vibration is reduced.

[0026] like Figure 1 - Figure 4 As shown, a fan blade 6 is fixedly mounted on the outer wall of one end of the motor shaft 4 inside the housing 1 via a key connection. The fan blade 6 is a centrifugal fan blade, and its air outlet direction is towards the air outlet 201 between the mounting plate 2 and the connecting seat 3. When the motor shaft 4 rotates, it will synchronously drive the fan blade 6 to rotate at high speed. The centrifugal force generated by the fan blade 6 will draw cold air from outside the housing 1 into the housing through the air inlet 301. When the cold air flows through the motor shaft 4, bearing seat 5 and other heat-generating components, it absorbs heat to form hot air. Then, driven by the fan blade 6, it is discharged from the housing 1 through the air outlet 201, completing the active air cooling cycle.

[0027] like Figure 1 - Figure 4 As shown, the fan blade 6 has heat dissipation holes 7 on its wall. The heat dissipation holes 7 and the air outlet 201 are staggered. The staggered design can prevent the exhaust hot air from flowing back directly through the heat dissipation holes 7. At the same time, it can guide the external cold air to enter through the heat dissipation holes 7, which complements the air intake of the air inlet 301, further strengthening the convection heat dissipation channel inside the outer shell 1 and improving the heat exchange efficiency.

[0028] It should be noted that in this type of joint module rapid heat dissipation structure, the motor shaft 4 rotates and drives the fan blades 6 to rotate synchronously during use.

[0029] Air intake stage: The negative pressure generated by the fan blade 6 causes external cold air to enter the interior of the outer casing 1 through the air inlet 301 of the connecting seat 3 and the dust filter.

[0030] Heat absorption stage: Cold air flows through heat-generating components such as motor shaft 4 and bearing housing 5, absorbing the heat generated during operation, and the temperature rises to form hot air.

[0031] Exhaust stage: Under the centrifugal force of the fan blades 6, the hot air is pushed towards the air outlet 201 between the mounting plate 2 and the connecting seat 3. Some of the hot air is directly discharged from the outer casing 1, and some of the hot air is discharged through the heat dissipation holes 7 on the periphery of the outer casing 1.

[0032] Passive heat dissipation: The outer casing 1 absorbs internal heat through metal conduction and transfers it to the heat dissipation fins on the outer wall. The fins come into contact with the air to complete passive heat dissipation, while accelerating the flow of hot air discharged through the heat dissipation holes 7, further reducing the internal and external temperature of the outer casing 1.

[0033] The above-described embodiments are merely examples of several implementations of this utility model. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A rapid heat dissipation structure for a joint module, comprising a housing (1), characterized in that, An mounting plate (2) is provided on the outer shell (1), and a connecting seat (3) is provided inside the outer shell (1). An air inlet (301) is provided on the connecting seat (3), and an air outlet (201) is provided between the mounting plate (2) and the connecting seat (3). A motor shaft (4) is rotatably passed through the center of the mounting plate (2). A bearing seat (5) is sleeved on the motor shaft (4). A fan blade (6) is also provided inside the outer shell (1) and fixedly sleeved on the output end of the motor shaft (4). A heat dissipation hole (7) is provided on the wall of the fan blade (6).

2. The rapid heat dissipation structure for a joint module according to claim 1, characterized in that, The mounting plate (2) and the outer shell (1) are an integral structure, and at least two air outlets (201) are evenly distributed along the circumference of the mounting plate (2).

3. The rapid heat dissipation structure for a joint module according to claim 1, characterized in that, The air inlet (301) is located on the side wall of the connecting seat (3) and communicates with the internal space of the outer shell (1). A dustproof net is provided at the air inlet (301).

4. The rapid heat dissipation structure for a joint module according to claim 1, characterized in that, The bearing housing (5) and the connecting seat (3) are connected by an interference fit, and at least two bearings are provided in the bearing housing (5) to support the motor shaft (4).

5. The rapid heat dissipation structure for a joint module according to claim 1, characterized in that, The fan blade (6) is a centrifugal fan blade, and the air outlet direction of the fan blade (6) is towards the air outlet (201).

6. The rapid heat dissipation structure for a joint module according to claim 1, characterized in that, The heat dissipation holes (7) are opened on the peripheral wall of the outer shell (1) and are staggered with the air outlet (201) to form a convection heat dissipation channel.

7. The rapid heat dissipation structure for a joint module according to claim 1, characterized in that, The outer wall of the outer shell (1) is also provided with heat dissipation fins, which are integrally formed with the outer shell (1) and are evenly distributed along the circumference of the outer shell (1).

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